Shuttle change motion for looms



Mir. s. 1925.

- 1,528,644' A. WIDMER ET AL smn'm m: CHANGE MOTION FOR LOOMS pnea may a, p24 2 Sheets-Sheet 1 VIII),

. ..Mar. 3, 1925. 1,528,644

A. WIDMER ET AL SHUTTLE CHANGE MOTION FOR LOOMS Filed May 6, 1924 2 Shets-Sheet 2 Patented Mar. 3, 1925.

UNITED STATES iszaen PATENT oFFIcE.

ADOLPH WIDMER, or'rarnnson, AND FREDERICK w. VOGTMAN, or rnosrncr max, NEW JERSEY.

SHUTTLE CHANGE MOTION FOR LOOMS.

Application filed May 6,

T a all whom it may concern:

Be. it known that we, An'onrn WlnMnn and Fnnonnron W. VOGTMAN, citizens of the United States, residing at Paterson and Prospect Park, respectively, in the county oi: Passaic and State of New Jerseyghave invented certain new and useful Improvements in Shuttle Change Motions for Looms, of which the following is a specification.

This invention relates to looms and in particular'to that class of looms in which two or morerows or banks of shuttles are employed and are moved vertically so that any one row or bank may be positioned for a. more or less length of time inoperative relation to be received by the sheds of warp formed. Ourobject is to provide a so-called change-motion mechanism for effecting the shifting and positioning of the banks or rows of shuttles which will be simple in construction and reliable in operation and readily applicable to any existing loom and which will be operated vfrom the Jacquard or the like without calling into service for this purpose more than one hook or equivalent element of the Jacquard and yet the mechanism may be adapted to control any number of banks or rows of shuttles.

In the drawings,

Fig. 1 is a side elevation of a loom em bodying the invention;

Fig. 2 is a side elevation of so much of the loom as directly includes the invention;

Fig. 3 is a plan of what is shown inFig. 2;

Fig. 4 is a section on line H, Fig. 2; and

Figs. 5 and 6 illustrate details. s

In the loomframe a is arranged the batten-including structure 5 reciprooated from the rotating crankshaft. c through theusual pitmen, one of which appears in Fig. l at (Z, and having suitably guided therein according to any well-known construction the ver tically shiftable guiding structure a tor the rows of shuttles 7' which are reciprocated therein, to cause the shuttles the row which has been brought to the proper elevation for the-purpose to pass through the shed of warp formed at g, by any means (not shown). The structure 6, is suspended at spaced points in its length from forward arms of a lever structure h (onlythe near: est forward arm is shown) from whose shaft in at the near end thereof projects a rear- 1924. Serial no. 711,363.

I ward arm 72. which is connected with actuator-levers j by a link In, apulley Z journaled in the lower end of the link and a flexible connection m which is extended over the pulley and has its ends attached tothe actuator-levers. There being four rows of shuttles in the present case and two actuatorlevers and the latter being of different lengths any shuttlerow may be brought in to cooperative relation to the shed formed, i. e., according as one off the actuator levers is up and the other down, or vice v'ersa, or both are up or both are down. There is nothing novel, however, in this, orany part in fact of the mechanism so far described. The improved change-motion mechanism is adapted to control any number of rows or banks of shuttles from two up (F igs. 2, 3 and 4 showing in fact three actuator-levers which when moved to the various relative positions possiblewould, with the employment of appropriate and well-known forms of connectionsbetween them and the rocking lever it, control more than the four rows of shuttles seen in Fig. 1). y I

A fixed structure comprising a plate n and a. laterally projecting bracket n is bolted to the side of and may betreated as a part of the loom-frame. In this are journaled the spaced gears 0 p forming with two intermediate gears q q meshing with them and with each other a gear train; the gear 0 meshes with a gear of on the crank-shaft 0; Following the usual construction in general but difiering therefrom in certain details as will be later pointed out the gears 0 p have continuous toothed portions to intermesh with the gears Q g and also mutilated portions, witl'rwhicl'i latter are adapt-edto cooperate in the well-known manner the vibrator crank-gears r which are journaled in vibrator-levers s fulcrumed in the frame at t and each having the connector or link a connecting a crank pin r thereon with a corresponding actuator lev'er Each vibratorlever s has a slot 8 in its ree end which receives apin o on a pinion v which at one side has a rectangular portion 21 against which bears a spring-pressed plunger n; slidable in theframe and adapted to hold the pinionin either of the positions of half-rotation to which it is movedthe pinion a is journaled on a stud ac what projects from one of the vertical walls a of structure 91. Each pinion a) meshes with a pinion 1 of twice its diameter and this pinion has four equidistant laterally projecting pins ;1 It will thus be seen that if any pinion 3/ be turned a quarter-revolution at a time the corresponding pinion "0 will be turned a halfrevolution and so shift the vibrator-lever up or down, the parts being retained each time in the position to which they are thus moved by the pressure of the plunger w against two opposite sides of the portion 0 of pinion and the gear-train 0q -p being constantly driven, on said parts assuming either of such positions one or the other of the gears 0 p will turn the vibrator crank-gear a half-revolution and leave it at dwell until said parts are made to assume the other position so that the other of said gears will turn the vibrator crank-gear back a llEIlf-I'QVOllltlOll and leave it at dwell, thus moving the actuator-lever, through connector as, first one way and then the other.

Each pinion z, is turned a quarter-revolution at a time by a pawl which has a hooked lower end .2 to engage the pins 1 one after another and is adapted to be lifted intermittently by means, to be described, engaging its hooked upper end 2 the pawl having; a tail which is connected by a spring" 2 witlrthc frameso that the pawl is normally held down and also in guided contact with a transverse supporting rail 3 atlixed to the frame. The said pawl-liftin means is a U-shaped lever 4; fulcrumed, to move in a vertical plane. on the fixed projecting shaft 5; it has a longitudinal slot l in one arm thereof which r ceives a crank-pin 6 of the gear 0. The lever i is thus made to reciprocate once for each revolution of the crank-shaft c (or each pick) of the loom, and if any pawl is shifted toward the lever so that its hooked upper end 2 overlies the knife l" of the lever the pawl will rise with the lever and so on each such rise will catch with its hooked end .2 the pinion. y at one of the pins y and turn the pinion a quarter-revolution as stated. Pinion y forms in effect a ratchet.

The shifting of the pawls is controlled by indicator means constructed as follows: Each pawl is normally held by its spring- 2 abutting a bell-crank lever T in thefork 7 of the latter. this lever being; fulcrumed in a part of the bracket 1?. and itself normally abuttingany suitable stop-here a pattern chain which is to be referred to. This lever 7 has an eye 7 to which may be attached a wire or equivalent extending to a hook of the Jacquard machine of the loom. When this Jacquard hook calls the lever 7. so that the lever is shifted and so shifts the pawl z into position-to be caught by knife 48 of lever 4, the knife in rising Will elevate the pawl. By this arrangement as many different Jacquard hooks would be subject to service as there are pawls 2 to be operated. An important object of our invention is to reduce to one the number of hooks of the Jacquard thus subiect to service. so as to reduce to the minimum the punching of the cards of the Jacquard n1achine in so far as the change-motion mechanism is concerned. To this end we employ a cylinder 8 'iournaled in the frame and over this extend a pattern chain 9 having a row of properly spaced balls or rollers 9 toactuate each lever 7, effecting the rotation of the cylinder and consequent advance of the chain as follows: A lever 10 is fulcrumed. to move in a vertical plane, on the fixed shaft 11 projecting from the structure 'n, and this carries an upstanding hook l2 pivoted thereto and normallv held back by a spring 13 so as not to catch any of the four pins 8 projecting laterally and equi distantly from the cylinder 8. The hook l2. is received in the crotch of and held bearing by the spring 13 against the fork it of a lever la which may be connected with a hook of the Jacquard machine by a flexible connection 15. lVhenever the Jacquard hook calls the lever 14: it shifts the hook 12: then on downward movement of the latter with lever 10 said hook will catch one of the pins 8 and hence turn the pattern chain a one-quarter revolution. The lever 10 is made to reciprocate once for each revolution of the crank shaft 0 of the loom by receiving in a longitudinal slot 10 thereof a crank pin 16 on the gear -p.$A.fter each quarter-revolution of the cylinder 8 it is held at dwell by a spring plunger 17 which bears against a rectangular block or head 8 on the cylinder.

The gears 0 and 79 are elongated cylinders each having at one end the hereinbeforc mentioned continuous toothed portion. as shown at Figures 3 and 5. to interinesh with the adjoininggear (I but having the remainder of its surface formed partially toothed and partially blank so as to properly cooperate as to this portion with the vibrator crank 'ears 1". Each of these gears 0 and 79 has a bearing on a stub-shaft 18 (Fig. projecting; from the plate H. and having a circumferential groove 18 receiving a retaining screw 19 set in the gear. The outer end of each gear 0 consists of a disk 20 having diametrically opposite arcuate slots 20 which receive screws 21 tapped into the body of the gear: thus the disk may be adjusted rotatively with respect to the body of the gear. The disk has a diametric slot 20 and in this is adjustable the crank pin 6 (or 16) that is to say, the crank pin (taking 6 forexample) has a fixed collar 6* to bear against the outer face of the disk and a nut 16' screwed on its inner end and coacting with the collar to clamp the crank pinto .the disk. Therotative adjliistment of each disk with :respect to the body ofthe gear is useful in timing the throw of the corresponding lever 4 or 10; the adjustment of the crank pin in the disk is useful in adjusting the extent of throw of such lever.

So far as we are aware the following conspicuous features of our invention are new in this art, to wit: Given an oscillating actuating member @(4 to rotate step by step through-a pawl and ratchet means as 2 3 the rotary means for vibrating a vibrator- .member as is, to provide for the shifting of the pawl into and out of engagement with the actuating member, whereby it remains at standstill in the periods when it is not engaged with said member. To provide, with'a ratchet-portion (as ly-p") of rotary means by which said member is vibrated, .a pawl (a) for engagement with said ratchetportion which is shiftable lengthwise in and guided by the frame and also shiftable laterally of itself into and out of engagement with a going oscillatory part (as 4). To provide, with a plurality of vibrator members movable back and forth independently of each other, an oscillating actuator (4) and means, one for each member, to transmit movement from the actuator to each of said members, means, including a moving pattern mechanism having pattern portions (9) respectively controll ng the first-named means, for rendering the respective firstnamed means functionally operative or inoperative to transmit such movement. And, finally, the adjustment possible at 20*.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent is:

1. A shuttle change'motion mechanism for looms including, with the frame, a vibrator-member movable back and forth therein from one to another position of rest, rotary actuating means for said member including a rotary member with which the first member is eccentrically connected and also including a rotary ratchet portion, a pawl to engage said ratchet portion and thereby rotate said means intermittently in one direction, each time until said rotary member has turned a half-revolution, a going oscillating member for actuating the pawl, said pawl being movable into and out of engagement with the oscillating member, and means to control said movements of the pawl into and out of engagement with the oscillating member.

2. A shuttle change-motion mechanism for looms including, with the frame, a vibrator-member movable back and forth therein from one to another position of rest, rotary actuating means for said member including a rotary member with which the first member is 'e'ccentrically connected and also including a rotary ratchet portion, a pawl "to engage said ratchet portion and thereby rotate said means intermittently in one direction each time until said rotary member has turned a half-revolution, a 'going oscillating member for actuating the pawl, said pawl being movable into and out of and normally held out of engagement with the oscillating member, and patterncontrolled means to shift the pawl into engagement with the oscillating member.

'3. IA shuttle change-motion mechanism for looms including, with the frame, a vibrator-member movable back and "forth therein, rotary actuating means for said member including a rotary member with which the first member is 'eccentrically engaged and also including a ratchet porton, a pawl bodily shiftable lengthwise in and guided by the frame and also shiftable laterally of itself in the frame, means to control the lateral shifting of the pawl, and a going oscillating member, into engagement with which the pawl is laterally shiftable, for shifting the pawl len thwise, the pawl when shifted lengthwise eing engageable with and adapted to'rotate said ratchet portion.

4. A shuttle change-motion mechanism for looms including, with the frame and with a pair of spaced going rotary gears and a third rotary gear arranged between and movable back and forth into geared relation to one or the other of the first-named gears, a vibrator-member in which the tlrrd gear is journaled and movable back and forth to shift the third gear into gear with one or the other of said first-named gears, rotary means to oscillate said member operatively connected therewith, an actuating member operatively connected with and adapted to be oscillated by one of the first-named gears, means to transmit intermittent rotary movements to sa d rotary means from said actuating member shiftable into and out of engagement with the latter, and means to control the shifting of the lastnamed means.

5. A shuttle change-motion mechanism for looms, including, with the frame and with a pair of spaced going rotary gears and vibrator crank-gears arranged between and movable back and forth into geared relation to one or the other of the first-named gears, vibrator-members inwhich the crankgears are respectively journaled and movable back and forth independently of each other to shift the crank-gears into gear with one or the other of said first-named gears, independent rotary means to oscillate said members operatively connected therewith, a lever operatively connected with and adapted to be oscillated by one of the first two gears, separate devices, one for each rotary means, to transmit motion from the lever to said rotary means and shiftable independently of each other into and out of engagement with the lever, and means to control the shifting of said devices.

6. A shuttle change-motion mechanism for looms, including, with the frame and with a pair of spaced going rotary gears and other rotary gears arranged between and movable back and forth into geared relation to one or the other of the first-named gears, vibrator-members in which the said other gears are respectively journaled and each movable back and forth to shift the corresponding gear into gear with one or the other of said first-named gears, an oscillating actuator, separate means, one connected to each member and movable into and out of connection with said actuator, to transmit movement from the actuator to each of said members, means, including a movable pattern mechanism having patternportions respectively corresponding to said first-named means, for controlling the movements of said first-named means, an oscillating member operatively connected with and adapted to be oscillated by one of the first-named gears, and pattern-controlled third gear into gear with one or the other of said firstnamed gears, an actuating member operatively connected with and adapted to be oscillated by one of the first two gears, and means, disconnectively connecting the actuating and vibrator members, to

transmit actuat on to the vibrator member from said actuating member, the part of the one of the first two gears with which said actuating member is connected being rotatively adjustable relatively to the part thereof with which the third gear is moved into gear.

In testimony whereof we aflix our signatures.

ADOLPH VVIDMER. FREDERICK VOGTMAN. 

